Sash-fastener



(NoModeL) W. H. KING. Sash Fastener.

Patented May 3,188I.

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N PETERS, Fhoto-Liihographer, Waahingion. D. C.

NrrEn STATES ATENT ari en,

\V. HASKELL KING, OF ATHOL, MASSACHUSETTS.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 241,026, dated May 3,1881.

Application filed March 9.4, 1881. (N0 model.)

To all whom it may concern:

Be it known that I, W. HASKELL KING, a citizen of the United States,residing at Athol, in the county of Worcester and State ofMassachusetts, have invented new and useful Improvements in Sash Locksand Lifts, of which the following is a specification.

This invention relates to a sash lift and lock adapted for arrangementupon the bottom rail of a lower sash, and in which the lockautomatically engages with a suitable catch when the sash is down, butis disengaged therefrom and permits the sash to rise when upwardpressure is exerted upon the lift.

My invention consists in the combination, with a supporting-plate havingat or near its center a slot, of a lift composed of two arms, one ofwhich is pivoted to cars projecting from the rear of thesupporting-plate and a sashlock having a hook and also pivoted to therear surface of the supporting-plate and provided with an arm projectingabove and across the inner pivoted arm of the lift, all of which will bemore fully hereinafterdescribed in detail.

Figure l isa front elevation of m y improved sash-lock and lift, theparts being in position as when the lock engages a catch. Fig.2 is asimilar view with the parts in position as when upward pressure isexerted upon the lift and the lock is thrown out of engagement with itscatch. Fig.3 is a rear view, and Fig. 4 a side view, with the parts inposition as in Fig. l. Fig. 5 is a front view, showing the inventionapplied to a sash and the lock engaged with a catch secured to thestool-cap. Fig. 6 is a view of a catch suitable for use with myinvention.

The letter A designates a supporting-plate having a slot, B, cut throughit at ahout'its center and provided with suitable screw-holes, by whichit may be attached to the bottom sash-rail.

From the rear surface of the plate A, just above the slot B, project twolugs or ears, 0, between which is pivoted the end of an arm, D,projecting at about a right angle from the lift-arm D, which is providedat its front end with the finger-piece d. The main 1ift-arm D extendsthrough the slot B, somewhat to the rear of the plate A, before it isbent to form the arm D, and the rear portion of its upper edge joins thearm D in an oblique direction, as shown at c.

The letter E indicates thepivoted lock provided at its lower end with ahook,f. The upper portion of the lock is forked to form two arms, g 9,connected at their tops by an an glearm, h, at the junction of whichwith the arm {1 is arranged a hole or hearing to fit upon a pivot-pin,t, which projects from the rear surface of the plate A on one side ofthe slot B. The lock being thus loosely pivoted some distance to oneside of its center of gravity, it naturally inclines to the same side.The arm h of the lock rests above the lift, and when the latter israised by pressing upward upon the finger-piece cl the inclined facec ofthelift is thrown under and strikes the arm h, causing the lock to swingin the opposite direction from its natural inclination, thus, of course,having the effect to disengage the hook f from any fixed catch withwhich it engages when hanging freely.

In Fig. 5 is illustrated the operation of the invention and the mode ofattaching it to a window-sash. The plateA is secured to the frontsurface of the bottom rail,'7c, in which a suitable recess is formedbehind it to permit the free action of the parts, said recess extendingdownward, as indicated by dotted lines, to permit the movement of thehooked end of the lock and receive the catch m. The lower edge of theplate A is arranged to meet the top of the stool-cap l or strip, whichlies upon the windowsill close in front of the sash when the latter isdown. The catch an is formed on a metal plate, a, which is secured tothe outer face of the stool-cap in such position that said catch standsin the path of thehook, f, so that as the sash descends said hook willstrike said catch and be forced to one side, but swing back under it, asshown in dotted lines, after passing it. When it is desired to raise thewindow, upward pressure of the finger upon the finger-piece d causes thelock at the same time to swing away and become disengaged from thecatch, so that the sash may rise freely. The lift, it will be seen,exerts a positive pressure upon the arm h to disengage the lock, so thatthe disengagement is certain to take place when an effort is made toraise the sash by said lift, and thus is avoided the annoyance oftugging at a sash-lift while an imperfectly-acting independent lockprevents it from rising. The operation of myinvention does not in anymanner depend upon springs, which, as is well known, are very liable tofail, and are a prolific source oi annoyance. When the sash reaches itslowest position the lock naturally engages with the catch by gravity.

In Fig. 3 I have shown alight spring, 8, arranged to press the lockagainst the catch, but this is simply to prevent rattling when theinvention is applied to the windows ot'cars and other vehicles.

I do not, of course, limit myself to the precise combination of partsshown, as they may obviously be varied without departing from theprinciple of myinvention-as, forinstance, the arm -g might be omitted incasting the lock, and the lock might be arranged to hang verticallyinstead of being inclined to one side, the catch being arranged toengage the lock in a vertical position and the lift to throw it out ofthe vertical position to disengage it from the catch. The arm 9,however, makes the lock stronger and adds weight to that side to throwit to proper position to engage the catch.

What I claim is-- The combination, with the plate A, having slot B, ofthe lift composed of the arms D and D, the latter of which is pivoted tothe ears projecting from the rear surface of the plate, and thesash-lock E, pivoted to the rear surface of the plate and provided witharm h, extending above and across the arm D of the lift, said lock beingprovided with a hook, f, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

W. HASKELL KING. \Vitnesses:

JAMES L. NORRIS, J. A. RUTHERFORD.

